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Transverse momentum and process dependent azimuthal anisotropies in√sNN=8.16 TeV p+Pb collisions with the ATLAS detector

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The azimuthal anisotropy of charged particles produced in $$\sqrt{s_{\mathrm {NN}}}=8.16$$sNN=8.16 TeV p+Pb collisions is measured with the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 165 $$\mathrm {nb}^{-1}$$nb-1 that was collected in 2016. Azimut...

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Main Authors: Aad, Georges (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Krishnan, Anjali (Author) , Kugel, Andreas (Author) , Napolitano, Fabrizio (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Spieker, Thomas (Author) , Stamen, Rainer (Author) , Starovoitov, Pavel (Author) , Weber, Sebastian (Author) , Wessels, Martin (Author) , Yue, Xiaoguang (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 30 January 2020
In: The European physical journal. C, Particles and fields
Year: 2020, Volume: 80, Issue: 1
ISSN:1434-6052
DOI:10.1140/epjc/s10052-020-7624-4
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-020-7624-4
Verlag, lizenzpflichtig, Volltext: https://link.springer.com/article/10.1140/epjc/s10052-020-7624-4
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Author Notes:ATLAS Collaboration
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Summary:The azimuthal anisotropy of charged particles produced in $$\sqrt{s_{\mathrm {NN}}}=8.16$$sNN=8.16 TeV p+Pb collisions is measured with the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 165 $$\mathrm {nb}^{-1}$$nb-1 that was collected in 2016. Azimuthal anisotropy coefficients, elliptic $$v_2$$v2 and triangular $$v_3$$v3, extracted using two-particle correlations with a non-flow template fit procedure, are presented as a function of particle transverse momentum ($$p_\mathrm {T}$$pT) between 0.5 and 50 GeV. The $$v_2$$v2 results are also reported as a function of centrality in three different particle $$p_\mathrm {T}$$pT intervals. The results are reported from minimum-bias events and jet-triggered events, where two jet $$p_\mathrm {T}$$pT thresholds are used. The anisotropies for particles with $$p_\mathrm {T}$$pT less than about 2 GeV are consistent with hydrodynamic flow expectations, while the significant non-zero anisotropies for $$p_\mathrm {T}$$pT in the range 9-50 GeV are not explained within current theoretical frameworks. In the $$p_\mathrm {T}$$pT range 2-9 GeV, the anisotropies are larger in minimum-bias than in jet-triggered events. Possible origins of these effects, such as the changing admixture of particles from hard scattering and the underlying event, are discussed.
Item Description:Gesehen am 17.07.2020
Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt
ATLAS Collaboration: G. Aad, M. Dunford, S. Franchino, A. Krishnan, A. Kugel, F. Napolitano, A. Schoening, H.-C. Schultz-Coulon, T.M. Spieker, R. Stamen, P. Starovoitov, M.S. Weber, M. Wessels, X. Yue [und weitere]
Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-020-7624-4

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